A3742, VA3742

SALE OF AUTOMATIC SWITCHES А3742, А3742Б, ВА3742, А3742М, А3742П, А3742БР, А3742БТ3, А3742БХЛ3 FOR NOMINAL CURRENTS 630 A WITH ELECTROMAGNETIC COUPLINGS.

Automatic switches A3742 are designed to conduct current in normal mode and for selective protection in case of short circuits, overloads of unacceptable duration and unacceptable voltage drops, as well as for infrequent (up to 30 times a day) operational disconnections of electrical circuits with a rated voltage up to 660 V AC frequency 50 and 60 Hz.

Switches can be equipped with an independent release, a zero-voltage release, free contacts and an electromagnetic drive.

Switches are manufactured in stationary and in retractable designs.

Technical characteristics of the switches:

1. Rated current, A 630

2. Application category A.

3. The number of poles 3.

4. Rated current of the semiconductor release (RP), A 250; 400; 630; 800.

5. Adjustable rated operating currents IR, A 160; 200; 250. 250; 315; 400. 400; 500; 630.

6. Initial operating current in the zone of the overload currents, multiples of the rated working current of RP 1.25.

7. Set-point according to the response time in the zone of overcurrent currents at a current of 6IR, s: 4; 8; 16.

8. Settings for the operating current in the zone of short-circuit currents, multiples of the rated working current 2; 3; 5; 7; 10.

9. Settings for the current tripping of electromagnetic releases, A 4000; 6300.

10. Rated operating short-circuit breaking capacity, kA:

- at a rated voltage of 380 V 56.

- at a nominal voltage of 660 V 27.

11. Wear resistance of switches:

- total number of cycles is 12,000.

- number of cycles of the VO under a load of 8000.

12. Overall dimensions (width x height x depth), mm 225x400x160.

13. Weight (stationary version), not more than 30 kg, not more.

     With an electromagnetic drive of 36 kg, no more.